Vertically stowable modular multi-purpose trailer

ABSTRACT

A vertically stowable modular multi-purpose trailer is provided. The trailer includes a forward support section including a first tubular frame having a main body portion with a first upper platform and rear interface side, and forward trailer neck; a pair of caster wheels attached proximate said rear interface; and a first planar deck substantially covering the first upper platform. The trailer further includes a rear support section including a second tubular frame having a second upper platform and a forward interface; and a second planar deck substantially covering the second upper platform. A pair of hinge assemblies interconnecting rear interface and said forward interface. The trailer is adapted to be configured in a deployed configuration, wherein the forward support section and rear support section are longitudinally positioned next to each other forming a generally horizontally oriented common planar platform for supporting a payload. The trailer is further adapted to be configured in a vertically stowed configuration, wherein the forward support section and rear support section are adapted to be folded about the pair of hinge assemblies such that the forward support section and rear support section are latitudinally positioned next to each other in a generally vertical orientation.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of Non-ProvisionalApplication No. 10/713,697 under 35 U.S.C. §120 to Kenneth R. Thurm,filed on Nov. 14, 2003. the disclosure of which is expresslyincorporated by reference herein in its entirety.

STATEMENT RE: FEDERALLY SPONSORED RESEARCH/DEVELOPMENT

Not Applicable

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to the field of multi-purpose trailers. Inparticular, the present invention relates to trailers designed to carrymotorcycles, ATV's, golf carts, watercraft, lawnmowers, constructionequipment, furniture, and wide variety of other cargo, devices orobjects. Furthermore, the present invention relates to trailers whichmay be folded or collapsed into a stowable package and stored in acompact vertically upright manner.

2. Background of the Invention

As the popularity of motorcycles, ATV's and small watercraftproliferates, the demand for more practical, versatile and sophisticatedmotorsports trailers also increases. There are currently many differenttypes and models of motorcycle and ATV trailers available on the markettoday which are generally satisfactory products; however, many consumersdesire improved and innovative designs over the traditional motorcycleand/or ATV trailer. Some of the various prior art trailers utilized tohaul motorcycles and ATVs are now herein described below.

One of the longest standing motorcycle and ATV trailer designs hasevolved from the basic utility trailer design that has been utilized fordecades. This type of trailer utilizes a large flat rectangular bed.Features of this design may include removable side rails and on/offloading ramps hinged to the rear of the rectangular bed. Although thisbasic design has proven to be very reliable and functional over theyears, it does have disadvantages. For instance, the flat rectangularbed is not designed to be easily stowed. Since the rectangular bed istypically a rigid body constructed with a frame of metal beams and thefloor of the bed being either covered in diamond plate or wooden planks,the bed cannot be collapsed or folded. As a result, when the trailer isnot being used, it still is deployed in its normal configuration. Thismeans valuable storage space, garage space, driveway space, yard space,or the like is consumed. Another disadvantage of the rectangular beddesign is that it is typically inherently heavy due to its heavy-dutyframe construction. Thus, in most situations, these traditional styledtrailers are under utilized in regard to capacity. For instance, atrailer that was once originally designed to haul heavy-duty farmequipment such as tractors, has a much greater hauling capacity thanwhat is required to haul a couple motorcycles or an ATV. Furthermore,the flat rectangular bed design does not offer special features adaptedexplicitly to secure motorcycles.

Another example of an existing trailer is a smaller lighter weight framedesign which is specifically configured for transporting motorcycles. Anexample of this design is disclosed in U.S. Design Pat. No. 336,869.This design includes a trailer frame that is typically constructed fromsquare or rectangular tube or beams. Either one, two or three channelrails are placed atop the frame the for accepting the motorcycle tires.Although these designs are lighter weight and easier to maneuver, theydo have some drawbacks. For instance, since the trailer does nottypically have planar decking, it can only be used to transportmotorcycles and is not capable of transporting ATV's. Also, since thisdesign does not have planar decking, storage space for auxiliaryequipment is not available. And even though this design is more compact,it still takes up substantially more space than is required, since ittypically is not designed to be collapsed or stored vertically. Andsince the aforementioned designed is optimized for transportingmotorcycles, the trailer is otherwise not very useful when other cargoneeds to be transported such as furniture. Thus, this design lacksflexibility that is desired by many consumers.

A third variety of design is a design similar to the previous design,but additionally is designed to be stored in a vertical position. Anexample of this trailer is disclosed in U.S. Pat. No. 5,340,145 to Leibet al. entitled “Collapsible Trailer”. In particular, a collapsibletrailer is provided which includes a first and second platform which ispivotally mounted to the first platform so that the second platform maymove between an open and closed position. A support arm is mounted onthe first platform and extends to contact the second platform at aposition substantially away from the pivot axis of the second platformwhen in the open position. This design exhibits very desirable featuressuch as the ability to be stored in a vertical upright position and acompact easily maneuverable design. However, this design has the samedrawbacks as the previous designs, in particular, it is dedicated toonly one purpose for transporting motorcycles. Moreover, this designlacks planar decking.

Thus, one of the overall primary disadvantages of the aforementioneddesigns is that the prior art trailers are either designed with aspecific task in mind (e.g., transporting motorcycles) or designed witha very general task in mind, such as basic utility. That is to say, atrailer may be designed to accomplish a specific task, such as haulingmotorcycles, yet the trailer cannot be converted into a general purposeutility trailer. Or perhaps the trailer is general purpose built andlacks components/design features (such as wheel guides and chock) whichare provided on trailers designed to accomplish a specific task such ashauling a watercraft, motorcycle or ATV. With these disadvantages inmind, it would be desirable to provide a trailer which has amulti-purpose role, in particular, the ability to be adapted from aspecific mission to a more general mission.

Furthermore, none of the aforementioned designs take advantage ofstate-of-the-art manufacturing processes which consumers have shown astrong preference for and of which manufacturers desire to implement toreduce fabrication costs. For instance, round tubular steel double frameconstruction has been shown to be lighter than traditional rectangularand square tubing frame designs, while still exhibiting the samestructural strength. The ability to manufacture bent tube frameeconomically opens up the opportunity to incorporate a variety of framedesign improvements that are difficult or very costly to achieve withsquare or rectangular tubing which does not lend itself well to beingbent.

Other features of which none of the aforementioned designs incorporateis the concept of modularity. By utilizing similar sub-components invarious models of trailers, overall costs of manufacturing the varioustrailers may be reduced, and thus, the savings may be passed to theconsumer.

It would be advantageous to provide a motorsports trailer that overcomesthe aforementioned disadvantages that the prior art trailers exhibit. Inparticular, it would be advantageous to develop a line of multi-purposemotorcycle and/or ATV trailers based upon a modular concept in whichsimilar components, designs, features, parts, etc. may be shared withineach embodiment. It would be further advantageous to utilizehigh-strength light weight steel double frame construction designs whichhave been shown to be lighter and as strong as traditional square tubingor rectangular tubing frames. It is also desirable to package theaforementioned tubular frames in a design which may be stowed in avertically upright position.

BRIEF SUMMARY OF THE INVENTION

The aforementioned disadvantages are overcome by providing a verticallystowable modular multi-purpose trailer. The trailer includes a forwardsupport section including a first tubular frame having a main bodyportion with a first upper platform and rear interface side, and forwardtrailer neck; a pair of caster wheels attached proximate the rearinterface; and a first planar deck substantially covering the firstupper platform. The trailer further includes a rear support sectionincluding a second tubular frame having a second upper platform and aforward interface; and a second planar deck substantially covering thesecond upper platform. A pair of hinge assemblies interconnecting therear interface and the forward interface. The trailer is adapted to beconfigured in a deployed configuration, wherein the forward supportsection and rear support section are longitudinally positioned next toeach other forming a generally horizontally oriented common planarplatform for supporting a payload. The trailer is further adapted to beconfigured in a vertically stowed configuration, wherein the forwardsupport section and rear support section are adapted to be folded aboutthe pair of hinge assemblies such that the forward support section andrear support section are latitudinally positioned next to each other ina generally vertical orientation.

According to another aspect of the present invention, when the traileris vertically stowed, the pair of caster wheels are in contact with aground surface. According to another aspect of the present invention,when the trailer is deployed, the pair of caster wheels are elevatedfrom the ground. Another aspect of the present invention includes themain body having a recess underneath the first upper platform adapted tostore a spare wheel and tire. A further aspect of the present inventionincludes the trailer being configured to transport a single motorcycleor configured to transport a plurality of motorcycles.

According to another aspect of the present invention, the trailerfurther comprises at least one motorcycle guide rail and wheel chockassembly removably attached to the first upper platform. Moreover,another aspect of the present invention includes at least one loadingramp adapted to be stored within the rear support section, wherein oneend of the at least one loading ramp may be attached to a rear end ofthe rear support section and the other end is positioned to engage theground.

A further aspect of the present invention includes the first and secondtubular frames formed from round steel tube. Additionally, the trailerincludes an axle attached to the main body portion, an independenttorsion suspension system attached to the axle, and a pair of wheels andtires rotatably attached to the suspension system. Also, the presentinvention may include a spare tire stored within the recess. Accordingto another aspect of the present invention, the trailer further includesa trailer hitch attached to the forward trailer neck. Another aspect ofthe present invention may include attaching a modular removable stoneguard positioned in a forward region of said forward support section.Another aspect of the present invention may also include at least oneutility box fastened to the first upper platform of the forward supportsection.

Moreover, when the trailer is deployed and the at least one motorcycleguide rail and wheel chock assembly is removed, the generallyhorizontally oriented common planar platform provides a flat bedplatform of about 5′×7′. And another aspect of the present inventionincludes a plurality of grating panels attached to the first and secondplatforms, said grating panels laterally positioned outboard of thefirst and second planar deck.

Other exemplary embodiments and advantages of the present invention maybe ascertained by reviewing the present disclosure and the accompanyingdrawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described in the detailed descriptionthat follows, by reference to the noted drawings by way of non-limitingexamples of preferred embodiments of the present invention, in whichlike reference numerals represent similar parts throughout several viewsof the drawings, and in which:

FIG. 1 is a frontside overhead perspective view of a first exemplaryembodiment of a vertically stowable modular trailer configured for onemotorcycle;

FIG. 2 is a backside perspective rear view of the first embodiment ofthe vertically stowable modular trailer configured for one motorcycle;

FIG. 3A is a perspective view of the frame of the first embodiment,according to an aspect of the present invention;

FIG. 3B is a perspective view of a removable motorcycle guide railassembly;

FIG. 4 is a front perspective view of the first embodiment depicting thetrailer in a vertically stowed upright position, according to an aspectof the present invention;

FIG. 5 is a rear perspective view of the first embodiment depicting thetrailer in a vertically stowed upright position, according to an aspectof the present invention;

FIG. 6 is a frontside overhead perspective view of a second exemplaryembodiment of a vertically stowable modular trailer configured for twomotorcycles;

FIG. 7 is a backside overhead perspective view of the second exemplaryembodiment of a vertically stowable modular trailer configured for twomotorcycles;

FIG. 8 is a front perspective view of the second embodiment in avertically stowed upright position, according to an aspect of thepresent invention;

FIG. 9 is a rear perspective view of the second embodiment in avertically stowed upright position, according to an aspect of thepresent invention;

FIG. 10 is a side perspective view of the second embodiment convertedinto a flatbed configuration for carrying cargo; and

FIG. 11 is a rear perspective view of the second embodiment convertedinto a flatbed configuration for transporting an ATV golf cart or thelike.

DETAILED DESCRIPTION OF THE INVENTION

The particulars shown herein are by way of example and for purposes ofillustrative discussion of the embodiments of the present invention onlyand are presented in the cause of providing what is believed to be themost useful and readily understood description of the principles andconceptual aspects of the present invention. In this regard, no attemptis made to show structural details of the present invention in moredetail than is necessary for the fundamental understanding of thepresent invention, the description taken with the drawings makingapparent to those skilled in the art how the several forms of thepresent invention may be embodied in practice.

FIRST EXEMPLARY EMBODIMENT OF THE VERTICALLY STOWABLE MODULAR TRAILERFOR ONE MOTORCYCLE Overview of the First Exemplary Embodiment

FIGS. 1 through 5 illustrate a first exemplary embodiment of thevertically stowable modular trailer 2 configured to transport onemotorcycle. Modular trailer 2 is dual-purpose built such that it mayalso be configured into a flatbed trailer. Modular trailer 2 has adeployed configuration (see FIGS. 1 and 2) and a folded, stowablenon-deployed configuration which allows the modular trailer 2 to bestored in a vertical upright position (see FIGS. 4 and 5). Additionally,the trailer 2 may utilize a removable and stowable loading ramp 22(similar to ramps shown in FIG. 11). A preferred embodiment of thestowable modular trailer 2 may have a weight of about 250 lbs., capacityof about 1000 lbs., deck area of about 35″×76″, standing height of about89″, width of about 72″, depth of about 27″, and length of about 120″.

Modular trailer 2 utilizes a foldable platform configuration including aforward support section 9 and foldable rear support section 10. Both theforward support section 9 and foldable rear support section 10preferably are fabricated from round tube steel double frameconstruction. The modular trailer 2 also includes removable motorcyclerails 24 with a wheel chock 26, stowable loading ramp 22, casters 30 forvertical storage, diamond plate decking 32, 34, an independent torsionsuspension 16, 18, wheels and fenders 12, 14, stowable spare tire 36 andtrailer hitch 28. The trailer may also utilize a modular utility box andstoneguard as optical accessories.

The aforementioned components and other features of the first exemplaryembodiment of the stowable modular trailer 2 configured to transport onemotorcycle will first be described in the specification. The integrationof the components and functionality of the trailer 2 will then beexplained.

Forward Support Section of the First Exemplary Embodiment

Forward support section 9 is structurally based upon a forward tubularframe 38 as illustrated in FIG. 3. The frame 38 preferably comprises around tube steel double frame construction. The tubing material may varywith regard to strength, weight and dimension (e.g., diameter andthickness) depending on the specified capacity of the trailer. Forinstance, the tubing may be a high-strength steel alloy for heavy-dutytrailer construction or a lightweight high-strength aluminum alloy for alight weight build.

Forward tubular frame 38 preferably includes a main center support 40which may be comprised of a left and right main tubular members 39, 41.Main center support 40 acts as the backbone of the forward tubular frame38, extending from the most rearward end of the frame 38 through theentire frame body, and further forming the trailer neck 78. A rear uppercrossmember 56 is attached in a perpendicular transverse manner to themain center support 40 to form the rear end of the forward tubular frame38. The frame 38 has a forward main body portion in which an A-frame isformed having an apex 79 which defines the front side of the main bodyportion of the frame 38 and the beginning of the trailer neck 78. Justpast the apex 79, the main center support 40 has an upwardly inclinedportion and another level portion adapted to receive trailer hitch 28.

An upper left main support 42 is connected to the left distal end of thecrossmember 56. The upper left main support 42 runs the entire length ofthe body tubular frame 38. The left main support 42 has a first straightportion (towards the rear of the frame) that is laterally offset fromthe main center support 40 and parallel thereto. A second portion ofleft main support 42 is angled inwards towards the apex 69 and isconnected to the left main tubular member 39 of the main center support40 at apex 69. Thus, the second portion defines the leftside of theA-frame structure which has apex 79 as the most forward end of the bodyof the frame 38.

In a mirror image to the upper left main support 42, an upper right mainsupport 43 is connected to the right distal end of the crossmember 56.The upper right main support 43 may run the entire length of the mainbody of tubular frame 38. The right main support 43 has a first straightportion (towards the rear of the frame) that is laterally offset fromthe main center support 40 and parallel thereto. A second portion ofright main support 43 is angled inward towards the apex 79 and attachedto the right main tubular member 41 of the main center support 40 atapex 79. The second portion defines an upper rightside of an A-framestructure which defined apex 79 at the most forward end of the main bodyof tubular frame 38.

A left middle crossmember 52 is positioned upward from the rear uppercrossmember 56 about one third the frame's 38 length (excluding thetrailer neck 78), such that it interconnects the first portion of theleft main support 42 to the left main tubular member 39 of the maincenter support 40. Similarly, a right middle crossmember 54 ispositioned upward from the rear upper crossmember 56 at a same distanceas the left middle crossmember, such that the right middle crossmember54 interconnects the first portion of the right main support 43 to theright main tubular member 41 of the main center support 40. Together,main center support 40, left and right main support 42, 43, rear uppercrossmember 56, and left and right middle crossmembers 52, 54, define aplane and mounting surface to which decking 32 is attached.

A lower portion of the forward tubular frame 38 is formed by attaching aleft vertical member 60 down from the left distal end of the rear uppercrossmember 56, attaching a right vertical member 62 down from the rightdistal end of crossmember 56, and tying the left and right verticalmembers 60, 62 together with a rear lower crossmember 58. A lowerA-shaped member 44 may then be attached to the most downward distal endsof the left and right vertical members 60, 62. The lower A-shaped member44 has a first portion which is downwardly offset and parallel to thefirst portion of the left main support 40. A second portion of the lowerA-shaped member 44 is angled in and upwards toward the apex 79 regionproximate the main center support 40 such that the second portion of thelower A-shaped member 44 is directly beneath the inwardly angled portionof the left main support 42. On the rightside of the frame 38, the lowerA-shaped member 44 has a fourth portion which is downwardly offset andparallel to the first portion of the right main support 43. A thirdportion of the lower A-shaped member 44 is angled in and upwards towardthe apex 79 region proximate the main center support 40 such that thethird portion of the lower A-shaped member is directly beneath thesecond portion of the right main support 43. Both the second portion andthird portion of the A-shaped member 44 may be connected together by anarch to further form another portion of the apex 79 of the A-frame whichis considered to be the most forward body portion of frame 38. It ispreferred that all four portions of the A-shaped member 44 are formedfrom one unitarily bent tube.

Additionally, a four-sided forward perimeter member 46 is positionedjust in front of the apex 79 of the A-frame of the frame 38. Inparticular, a first portion of perimeter member 46 is attached to theleft main support 42 at the inward bend between the first and secondportion of the left main support 42. The first portion of perimetermember 46 is flared outwardly left at an angle of about 30 degrees fromthe side of the frame 38 defined by the left main support 42. At abouthalfway up the length of the A-frame, a second portion of perimetermember 46 bends back inward towards the A-frame apex 79 and is connectedto the apex 79 region. Similarly on the right side of the frame 38, afourth portion of perimeter member 46 is attached to the right mainsupport 43 at the inward bend between the first and second portion ofthe right main support 43. The fourth portion of perimeter member 46 isflared outwardly right at an angle of about 30 degrees from the side ofthe frame 38 defined by the right main support 43. At about halfway upthe length of the A-frame, the third portion of the perimeter member 46bends back inward towards the A-frame apex 79 is connected to the secondportion of the perimeter member 46 via a continuous arch. Thus, it ispreferred that perimeter member 46 is formed from one continuous tube,forming a perimeter about the A-frame. It is observed that perimetermember 46 appears to have a shape of a pentagon lacking one side.

Furthermore, as shown in FIG. 3A, left and right strengthening elbows74, 76 are provided at the inwardly bent joint between the first andsecond portion of perimeter member 46 and at the inwardly bent jointbetween the third and fourth portion of perimeter member 46.

Additionally, a left forward connecting strut 48 is attached to the bendbetween the first and second portion of the A-shaped member 44 and theleft strengthening elbow 74. Similarly, a right forward connecting strut50 is attached to the bend between the third and fourth portions of theA-shaped member 44 and the right strengthening elbow 74.

The trailer neck 78 comprises three tubes including the most forwardportions of the left and right main tubular members 39, 41 from the maincenter support 40 and a lower trailer neck tube 72. As alreadydiscussed, just past the apex 79, the main center support 40 has anupwardly bent portion and another portion adapted to receive trailerhitch 38 which is bent level such that it is parallel and upwardlyoffset from the portion of the main center support 40 which forms thebackbone of the body of the tubular frame 38. Furthermore, the lowertrailer neck tube 72 is positioned underneath and in the seam formed bythe left and right main tubular members 39, 41 of the main centersupport 40, and follows the bending contour of the neck 78 from the apex79 region to the distal end of the neck. As is seen in FIGS. 1, 2, 5 and6, a standard trailer hitch 28 assembly is preferably attached to thedistal end of the trailer neck 78. Preferably, trailer hitch 28 isadapted to receive a ball. The trailer hitch 28 is a component wellknown in the art, and therefore, is not described in any further detail.

Foldable Rear Support Section of the First Exemplary Embodiment

Foldable rear support section 10 primarily includes a rear tubular frame82 as illustrated in FIG. 3. The rear frame 82 preferably comprises around tube steel double frame construction similar to the forward frame38. The tubing material may vary with regard to strength, weight anddimension (e.g., diameter and thickness) depending on the specifiedcapacity of the trailer. For instance, the tubing may be a high strengthsteel alloy for heavy duty trailer construction or a lightweight highstrength aluminum alloy for a light weight build.

Rear tubular frame 82 preferably includes an upper crossmember 84 and alower crossmember 86 oriented in the same direction as the upper andlower rear crossmembers 56, 58 from the forward tubular frame 38, sothat a foldable interface may be defined. The foldable interface will bediscussed in greater detail later in the specification. In particular,upper crossmember 84 is positioned directly above and in parallel withlower crossmember 86. An upper flared out U-shaped support 92 having aleftside attach point and right side attach point that are attached tothe left and right distal end of the upper crossmember 84, respectively.Thus, a plane is defined by the upper crossmember 84 and upper U-shapedsupport 92 which provides the supporting surface for the rear decking34. Also, a lower flared out U-shaped support 94 having a leftsideattach point and right side attach point is attached to the left andright distal end of the lower crossmember 86, respectively. The archedportions of the upper and lower U-shaped supports 92, 94 are connectedtogether in a parallel manner to form a rear frame tip portion 98. It isnoted that the lower U-shaped support 94 is oriented in an upward angletowards the rear frame tip portion 98 as compared to the upper U-shapedsupport 92 which is oriented in a generally level horizontal plane.Additionally, a pair of center struts 96 are positioned normal to andattached at the center of upper crossmember 84. The other ends of thepair of center struts 96 are attached to the inside surface of the upperU-shaped support 94 proximate the rear frame tip portion 98. The pair ofcenter struts 96 are provided to support the wheels of a motorcycleduring loading and unloading.

Integration of Forward Support Section, Foldable Rear Support Section,Axle, Suspension, Wheels and Casters of the First Embodiment

The following paragraphs describe how the forward support section 9,foldable rear support section 10, decking 32, 34, straight axle 16,independent torsion suspension 18, wheels and tires 12, stowable sparetire 36, caster wheel assemblies 30 and other components of the stowablemodular trailer 2 are interconnected to and integrated with each other.

Preferably diamond plate is utilized as the forward decking 32 which isattached to the upper surfaces of the forward support section 9. Also,diamond plate may be utilized as the rear decking 34 which is attachedto the upper surfaces of the foldable rear support 10 section. Moreover,any other type of plate material known in the art may utilized. As bestshown in FIGS. 3A and 5, a plurality of mounting tabs 114 are providedon various regions of the upper portions of the main body of tubularframe 38 and rear tubular frame 82. The plurality of mounting tabs 114are utilized to fasten the forward decking 32 to the upper portion oftubular frame 38 and to fasten the rear decking 34 to the upper portionof rear tubular frame 82.

Forward support section 9 and foldable rear support section 10 arerotatably attached via hinge assemblies 112 (see FIGS. 1, 2 and 5) toform a foldable interface. As a result, a hinged joint is formed betweenforward support section 9 and foldable rear support section 10. Thus,when trailer 2 is fully deployed (as shown in FIGS. 1 and 2), thehorizontal plane defined by forward support section 9 is coincident withthe horizontal plane defined by rear support section 10, therebycreating a continuous platform. However, when the trailer 2 is not inuse, rear support section 10 may be folded about the axis defined by thepair of hinge assemblies 112 (see FIGS. 4 and 5) and positioned eitheron top or vertically next to forward support section 9.

The stowable modular trailer 2 has an independent torsion suspensionsystem which includes straight axle 16, left and right torsionsuspension components 18, suspension brackets 118, and suspensionreceiving brackets 116. An exemplary independent torsion suspensionsystem utilized in the present invention is a “TORFLEX” suspensionsystem. This system is a torsion type suspension, which is at leastpartially self-contained within the straight axle 16. Straight axle 16may be attached directly to the body of frame 38 using suspensionbrackets 118; which are an integral part of the straight axle assembly16. A pair of upper and lower suspension receiving brackets 116 arepositioned on the tubular frame 38 to receive suspension mountingbrackets 118 which are rigidly attached to straight axle 16 (see FIG.3A). Each pair of brackets 116 are positioned on the left side and rightside of the body of the frame 38. In particular an upper bracket 116 isattached to the first portion of the left main support 42 and a lowerbracket 116 is attached to the first portion of the lower A-shapedmember 44. Similarly, an upper bracket 116 is attached to the firstportion of the right main support 43 and a lower bracket 116 is attachedto the fourth portion of the lower A-shaped member 44. The straight axle16, which has a pair of suspension mounting brackets 118, is thenreceived in the lower suspension receiving brackets 116. Compared to aconventional leaf spring system, the TORFLEX suspension system providessuperior suspension characteristics through the unique arrangement of asteel bar surrounded by four natural rubber cords, encased in the mainstructural member of the axle straight 116. A wheel hub spindle isattached to a torsion arm, which is fastened to the rubber-encased bar.As load is applied, the bar rotates causing a rolling compressiveresistance in the rubber cords. This action provides the same functionsas a conventional leaf spring axle with the added advantage onindependent suspension.

Other components of the stowable modular trailer 2 include wheels andtires 12, fenders 14 and tail lights 20 which are also well known in theart, and therefore, not described in any further detail. FIG. 5, clearlydepicts that the under body of the tubular frame 38 is designed suchthat a spare tire and wheel 13 may be stored in a recessed area betweenthe straight axle 16 and the A-shaped member 44. Another feature of thetrailer 2 is the strategic placement of a pair of caster assemblies 30on the underside of frame 38 at the most rearward and lower end of theframe 38. In particular, a left caster assembly 30 is attached to thecorner where left vertical member 60 and the rear lower crossmember 58intersect to form a corner joint. Similarly, a right caster assembly 30is attached to the corner where right vertical member 62 and the rearlower crossmember 58 intersect to form a corner joint. Additionally, athird caster wheel 31 may be attached to the lower forward crossmember86 of the foldable rear support section 10. Moreover, a securing member15 (see FIG. 4) is provided on the trailer 2 to secure the foldable rearsupport section 10 to the forward support section 9.

Removable Motorcycle Guide Rail and Wheel Chock of the First ExemplaryEmbodiment

The modular trailer 2 may include a removable motorcycle guide rail 24and wheel chock 26 as best illustrated in FIG. 3B. Guide rail 24 isadapted to receive at least one of the front and rear wheel of amotorcycle. When installed onto the forward support section 9, guiderail 24 is in a substantially horizontal position atop forward decking32. As shown in FIGS. 1, 2, and 3B guide rail 24 has a width W which isadapted to receive a motorcycle tire. It is noted that width W may varywith respect to differing embodiments of the present invention. Forinstance, the width of a rear tire of a custom motorcycle may besubstantially greater than the width of a rear tire for a productionmotorcycle. Therefore, various modular embodiments of the removableguide rail 24 may be provided which are configured for motorcycleshaving tires within specific ranges of tires widths W. Because the guiderail 24 and wheel chock 26 are removable, the modular trailer 2 is ableto convert to a flat bed platform. Thus, this is another modular aspectwhich adds versatility to the present invention.

FIG. 3B shows the modular guide rail 24 comprising a lower left supportmember 100, lower right support member 102 an upper left support member104 and upper right support member 106, all of which are longitudinallyoriented and positioned parallel with respect to each other. Lowersupport members 104, 106 are positioned laterally next to each other ina same horizontal plane. Similarly, upper members 100, 102 arepositioned laterally next to each other and in another horizontal plane;however, upper members 100, 102 are positioned above lower supportmembers 104, 106 and are spread wider apart than lower support members104, 106. Lower support members 104, 106 and upper members 100, 102 arepreferably, made from light weight high-strength metal tubing, forexample, a steel alloy or a high-strength aluminum. The diameters oflower support members 104, 106 and upper members 100, 102 are preferablyequivalent to or less than the diameters of forward tubular frame 38 andrear tubular frame 82.

Guide rail struts 108 are utilized to interconnect lower support members104, 106 to upper members 100,102. As a result, a u-shaped channel (asviewed from a cross-sectional perspective) is provided which is adaptedto receive at least one of the front and rear tire of a motorcycle whenthe motorcycle is positioned inside the guide rail 24. A forward tirecradle 110 is provided on the forward end of guide rail 24. Tire cradle110 is formed by bending lower support members 104, 106, and uppersupport members 100, 102 upward. As best illustrated in FIGS. 1, 2, and3B, upper support members 100, 102 are connected together forming cradlearch portion 110 and lower members 104, 106 are bent such that they areconnected to upper support members 100, 102 at a position before theformation of arched tip of the forward tire cradle. Thus, preferablyupper support members 100, 102 may be formed from one unitary tube.Similarly, lower members 104, 106 may also be formed from one unitarytube.

A wheel chock 26 is attached to guide rail 24 which is utilized toensure that the tire loaded into the forward tire cradle 110 is properlysupported. Wheel chock 26 has a general triangular shape which isadapted to conform to the curvature of a motorcycle wheel. Wheel chock26 is rotatably mounted with a bracket structure such that chock 26 willautomatically accept the entering wheel, and furthermore, flip over tosupport the back of the tire when the tire is rolled over chock 26. Thewheel chock 26 is open when the rear section of the wheel chock 26 isdown so that the motorcycle can be wheeled into place on the guide rail24. The wheel chock is closed when the motorcycle front wheel is fullyengaged in the wheel chock 26 and the front of the wheel chock 26 islying down flat against the guide rail 24. A feature of the wheel chock26 is that it is capable of holding the motorcycle in an uprightposition without the assistance of any other bracing member, kickstand,or tie-downs. Once the motorcycle is correctly secured in the wheelchock 26, the motorcycle will stand by itself. Thus, there is no need tohold the motorcycle upright. For additional safety measures, tie downstraps, preferably ratchet-style tie down straps, may be also used tosecure the motorcycle to the trailer.

It is further noted that a plurality of downwardly oriented attachmentrods 111 are connected to the bottom of the lower members 104, 106. Theattachment rods 111 are adapted to be fastened within respective rodfastener sleeves 109 (see FIG. 3A) which are positioned along the leftand right main tubular members 39, 41 of main support 40. Preferably rodfastener sleeves 109 are quick-disconnects which allow easy installationand removal of the guide rail 24.

Stowable Loading Ramp of the First Embodiment

The modular trailer 2 may utilize a stowable loading ramp 22, such as isdepicted as being deployed in FIG. 11 (second embodiment) and which isshown in a stowable position in FIGS. 1, 2 and 4. For the firstembodiment, only one ramp 22 is required to load a motorcycle. Ramp 22is adapted for loading and offloading both motorcycles and ATV vehiclesif required. In particular, ramp 22 includes a pair of inner parallelrails 124 and a lower transverse rail 122 attached to the lower end ofthe pair of inner rails 124. Also, a left 126 and right 128 rail arelaterally positioned to the sides of the inner rails 124, thus forming alongitudinally rectangular shaped ramp 22. On the upper side of the ramp22, the upper ends of the left and right rail 126, 128 may be arched andconnected together to from one continuous tube. Thus, left and rightrails 126, 128 may actually be formed from one continuous tube. Anattaching feature 120 is further incorporated on the upper attaching endof ramp 22 to secure and attach the upper end of the ramp 22 to the rearframe tip portion 98 of the foldable rear support section 10. Anexemplary attaching feature 120 may be formed as a ramp hook.

SECOND EXEMPLARY EMBODIMENT OF THE STOWABLE MODULAR TRAILER FOR TWOMOTORCYCLES Overview of the Second Exemplary Embodiment

FIGS. 6 through 11 illustrate a second exemplary embodiment of thevertically stowable modular trailer 4 configured to transport twomotorcycles. Modular trailer 4 is multi-purpose built such that it mayalso be configured into a flatbed utility trailer. In the flatbedconfiguration, modular trailer 4 is capable of carrying general cargo(see FIG. 10), one or two ATV's (see FIG. 11) or other vehicles such asgolf carts, riding lawnmowers and small farm tractors. Modular trailer 4has a deployed configuration (see FIGS. 6 and 7) and a folded, stowablenon-deployed configuration which allows the modular trailer 4 to bestored in a vertical upright position (see FIGS. 8 and 9). Additionally,the second embodiment may utilize a pair of removable and stowableloading ramps 22 (see FIG. 11). A preferred embodiment of the secondembodiment of the stowable modular trailer 4 may have a weight of about350 lbs., capacity of about 2000 lbs., deck area of about 5′×7′,standing height of about 90″, width of about 84″, depth of about 27″,and length of about 120″.

Modular trailer 4 utilizes a foldable platform configuration, similar tothat of the first embodiment, including a forward support section 209and foldable rear support section 210. Both the forward support section209 and foldable rear support section 210 preferably have a round tubesteel double frame construction. The modular trailer 4 also includes apair removable motorcycle rails 24 each having a wheel chock 26, casterassemblies 30 for vertical storage, diamond plate decking 232, 234,grating panels 280, an independent torsion suspension 16, 18, wheels andfenders 12, 14, stowable spare tire 36, trailer hitch 28 and otherfeatures.

The aforementioned components and other features of the second exemplaryembodiment of the vertically stowable modular trailer 4 configured totransport two motorcycles will now be described in further detail in thespecification.

Forward Support Section of the Second Exemplary Embodiment

Forward support section 209 primarily includes a forward tubular frame238 as is best viewed in FIG. 9. The frame 238 preferably comprises around tube steel double frame construction. The tubing material may varywith regard to strength, weight and dimension (e.g., diameter andthickness) depending on the specified capacity of the trailer 4. Forinstance, the tubing may be a high strength steel alloy for heavy dutytrailer construction or a lightweight high strength aluminum alloy for alight weight build.

Forward tubular frame 238 preferably includes a main center support 240comprised of a tubular member. Main center support 240 acts as thebackbone of the forward tubular frame 238, extending from the mostrearward end of the frame 328 through the entire main frame body, andfurther forming the trailer neck 278. A rear upper crossmember 256 isattached in a perpendicular transverse manner to the main center support240 to form the most rearward end of the forward tubular frame 238. Theframe 238 has a forward main body portion in which an A-frame is formedhaving an apex 279 which defines the front side of the main body portionof the frame 238 and the beginning of the trailer neck 278. Just pastthe apex 279, the main center support 240 has an upwardly inclinedportion and another level portion adapted to receive trailer hitch 28.

Further defining forward tubular frame 238 is a leftside longitudinalmember 211 and rightside longitudinal member 212 which are bothlaterally offset from the main center support 240 and parallel thereto.Both the leftside member 211 and the rightside member 212 are tied intothe crossmember 256. Both leftside and rightside members 211, 212 have afirst straight portion which spans the entire length of the trailerplatform. At leftside and rightside intersection points 215, 216, bothmembers 211, 212 are bent upwards to form an obtuse angle with therespective straight portions. A second portion of both leftside andrightside members 211, 212 is oriented along the obtuse angle. A thirdportion of leftside and rightside members 211, 212 is bent inwardlytowards the center of the most forward center region of the trailer neck278 until both third members meet with the third portion of the maincenter support 240 which forms an inner portion of the trailer neck 278.A fourth portion of leftside and rightside members 211, 212 are routedabove the third portion of the main center support 240 to form the upperleft and right portions of the trailer neck 278 of which is adapted toreceive trailer hitch 28.

A platform perimeter member 241 is utilized to define the outerperimeter sides (left, lower frontside, and right) of the main platformof the trailer 4. For descriptive purposes, the platform perimetermember 241 is separated into an upper left main support 242 and an upperright main support 243. Although these frame members may be formedindependently, a preferred embodiment forms platform perimeter 241 asone continuous frame member.

An upper left main support 242 is provided which defines the exteriorleft edge and forward left front edge of the main body of tubular frame238. The left main support 242 has a first straight portion which isfurther laterally offset from the leftside longitudinal member 211. Thefirst portion is connected to the left distal end of the crossmember 256and runs parallel to and laterally along the leftside longitudinalmember 211. At about beyond half the distance of the body of the frame238, a second portion of left main support 242 flairs outward at anangle, and then a third portion is abruptly curved back towards theleftside intersection point 215 at a normal angle with respect to theleftside longitudinal member 211. A fourth portion of the left mainsupport continues beyond the intersection point 215 which is orientedinward and forward towards apex 279.

Similarly, an upper right main support 243 is provided which defines theexterior right edge and forward right front edge of the main body oftubular frame 238. The right main support 243 has a first straightportion which is further laterally offset from the rightsidelongitudinal member 212. The first portion is connected to the rightdistal end of the crossmember 256 and runs parallel to and laterallyalong the rightside longitudinal member 212. At about beyond half thedistance of the body of the frame 238, a second portion of right mainsupport 243 flairs outward at an angle, and then a third portion isabruptly curved back towards the rightside intersection point 216 at anormal angle with respect to the rightside longitudinal member 212. Afourth portion of the right main support continues beyond theintersection point 216 which is oriented inward and forward towards apex279.

At apex 279 where the left and right main supports 242, 243 converge,both supports 242, 243 may be connected together to form an arch whichdefines at least a portion of apex 279. As previously stated, supports242, 243 may be one continuous tubular platform perimeter member 241which includes the same portions as both supports 242, 243, begins atthe left distal end of crossmember 256, is continuously connected atapex 279, and ends at the right distal end of crossmember 256 and hasthe same portions as both supports 242, 243. A left straight brace 283and right straight brace 285 is extended from the first portions of leftand right main supports 242, 243, and joined to the third transverseoriented portions of left and right main supports 242, 242.

In the alternative, the first portions of main supports 242, 243 may runthe entire length of the body. And only the second, third, and fourthportions of 242, 243 are unitarily formed together. In this alternativeembodiment, straight braces 283, 285 are eliminated. Furthermore, asshown in FIG. 9, left and right strengthening elbows 74, 76 are providedto add additional strength to the bend regions between the second andthird portions of main supports 242, 243.

An arrowhead shaped inner brace 245 further provides support for theforward support section 209. The inner brace 245 includes a leftsideinner brace 239 and a rightside inner brace 240. The tip of thearrowhead shaped inner brace 245 begins at the frame joint where themain center support 240 intersects the crossmember 256. At this joint, afirst straight portion of leftside inner brace 239 is routed to theleftside intersection point 215 and then substantially bent into in anacute angle such that a second portion may be connected to the rightsideof main center support 240 to form the backside of the arrowhead shape.Similarly, at the tip of the arrowhead shaped inner brace where the maincenter support 240 intersects the crossmember 256, a first straightportion of rightside inner brace 237 is routed to the rightsideintersection point 216 and then substantially bent into in an acuteangle such that a second portion which is connected to the leftside ofmain center support 240 to form the backside of the arrowhead shape.Thus, the main planar platform region of the tubular frame 238 of theforward support section 209 is formed at least by the first portion ofmain center support 240, the first portions of leftside longitudinalmember 211 and rightside longitudinal member 212, the entire continuoustubular platform perimeter member 241, and arrowhead shaped inner brace245.

Additionally, the tubular frame 238 also includes undercarriage bracing.In particular, at the joint where the leftside longitudinal member 211intersects the upper rear crossmember 256, a leftside rear verticalmember 218 is downwardly oriented. Similarly, at the joint where therightside longitudinal member 212 intersects the upper rear crossmember256, a rightside rear vertical member 219 is downwardly oriented. Alower rear crossmember 244 interconnects the leftside and rightsidevertical members 218, 219 and further is bent and angled upwards toconnect to the upper rear crossmember 256 where the most rearward endsof the first portions of upper left and right main supports 242, 243intersect and are joined to crossmember 256. Thus, the upper rearcrossmember 256 and the lower rear crossmember 244 define a planar rearsurface of the tubular frame 238 which defines a folding interface thatthe foldable rear support section 210 will be hingedly interfacedthereto.

At the frame joint where the leftside rear vertical member 218intersects the lower rear crossmember 244, a leftside lower longitudinalmember 246 traverses the entire length of the main platform of thetubular frame 238, such that it is positioned directly underneath thefirst portion of the leftside longitudinal member 211 and is connectedto the leftside intersection point 218. Similarly, a rightside lowerlongitudinal member 248 traverses the entire length of the main platformof the tubular frame 238, such that it is positioned directly underneaththe first portion of the rightside longitudinal member 212 and isconnected to the rightside intersection point 215. The side profile ofthe lower members 246, 248 is parallel and downwardly offset from theleftside and rightside longitudinal members 211, 212 in the rearward endof the tubular frame 238, however, the lower members 246, 248 are thenincreasingly bent upwards until members 246, 248 are joined tointersection points 215, 216. At the midpoints of members 246, 248, aleftside middle vertical member 220 and rightside middle vertical member221 interconnects members, 246, 248 to a mid-region of the leftsidelongitudinal member 211 and rightside longitudinal member 212,respectively.

Other lower frame supports include a lower rear center support 267 whichis connected to a middle portion of the lower rear crossmember 244 andis oriented in a parallel and laterally downset manner from the maincenter support 240. At about one third the length of the trailerplatform the lower rear crossmember 244 is upwardly curved afterstraight axle 16 such that it then connects directly to the main centersupport 240. Furthermore, a tire brace member 250 transversely spans thetubular frame 238 between the joints at which the middle verticalmembers 220, 221 connect to the leftside lower longitudinal member 246and rightside lower longitudinal member 248. Thus, tire brace member 250is oriented perpendicular to the main center support 240, andfurthermore, is bent inward towards main center support 240 to form arecessed region in the tubular frame 238 that a spare tire 36 may beattached and stored. Also, a forward neck support 253 is provided foradditional support. A first portion of a lower forward neck support 253is positioned directly below and parallel thereto main center support240 and further routed through apex 279. At apex 279, a second portionis bent upwards and connected to the third portion of the main centersupport 240 of the trailer neck 278. As is seen in FIGS. 8-10, astandard trailer hitch 28 assembly is preferably attached to the distalend of the trailer neck 278.

Foldable Rear Support Section of the Second Exemplary Embodiment

Foldable rear support section 210 includes a rear tubular frame 282 asillustrated in FIG. 8. The rear frame 282 preferably comprises a roundtube steel double frame construction similar to the forward frame 238.The tubing material may vary with regard to strength, weight anddimension (e.g., diameter and thickness) depending on the specifiedcapacity of the trailer. For instance, the tubing may be a high strengthsteel alloy for heavy duty trailer construction or a lightweight highstrength aluminum alloy for a light weight build.

Rear tubular frame 282 preferably includes an upper crossmember 284 anda lower crossmember 286 oriented in the same direction as the upper andlower rear crossmembers 256, 244 of the forward tubular frame 238, sothat a foldable interface is defined. In particular, upper crossmember284 is positioned directly above and in parallel with lower crossmember286. A U-shaped upper outer perimeter bar 260 is attached to the leftand right distal ends of upper crossmember 284 to form a generallyrectangular upper rear support section platform. In particular, a firstportion of the U-shaped perimeter bar 260 (i.e., a leg of the U-shape)is attached perpendicular to the most distal left end of uppercrossmember 284. A second portion of the U-shaped perimeter bar beginsat a ninety degree bend wherein the second portion is parallel to andlaterally offset from the upper crossmember 284. A third portion of theU-shaped perimeter bar 260 (i.e., a leg of the U-shape) begins atanother ninety degree bend wherein the third portion is parallel to andlaterally spaced offset from the first portion of the U-shaped perimeterbar 260. The third portion of the perimeter bar is attached to the mostdistal right end of the upper crossmember 284. Thus, the U-shapedperimeter bar 260 forms the outer perimeter edge of the rear tubularframe 282. A series of braces span the length of the rear tubular frame282 (i.e., parallel with the first and third portions of the u-shapedperimeter bar 260). An upper center support 262 is connected to thecenter of upper crossmember 284 and at a middle position of the secondportion of the u-shaped perimeter bar 260. A left bracing strut 261 isattached to the center of the second portion of the U-shaped perimeterbar 260 and further attached to a left portion of upper crossmember 284.A right bracing strut 263 is also attached to the center of the secondportion of the U-shaped perimeter bar 260 and further attached to aright portion of upper crossmember 284. Furthermore, a left pair ofparallel braces 264 and a right pair of parallel braces 266 areinterconnected between the crossmember 284 and the second portion of theu-shaped perimeter bar 260. The plies of parallel braces 264, 266provide structural support to the foldable rear support section 210 inthe region of which motorcycles will be rolled over during loading andoffloading.

Additionally, the rear tubular frame 282 includes undercarriage bracing.In particular, at the joint where the left pair of parallel braces 264intersects the upper rear crossmember 284, a leftside rear verticalmember 268 is downwardly oriented. Similarly, at the joint where theright pair of parallel braces 266 intersects the upper rear crossmember284, a rightside rear vertical member 269 is downwardly oriented. Alower rear crossmember 271 interconnects the leftside and rightsidevertical members 269, 270 and further is bent and angled upwards toconnect to the upper rear crossmember 284 where the most rearward endsof the first portion and third portion of the U-shaped perimeter bar 260attach to the upper rear crossmember 284. A second U-shaped lowerperimeter bar 272 has a first portion which connects at the frame jointat which the leftside vertical member 269 is attached to the lower rearcrossmember 271. The first portion is routed to the left rear corner 274of the rear tubular frame. The lower perimeter bar 272 then is bent inan acute angle to form a second portion which is connected to and runsparallel along the second portion of the upper u-shaped outer perimeterbar 260. A third portion of the lower perimeter bar 272 is then formedby a bend which forms another acute angle in which the third portion isthen attached to the lower rear crossmember 271 at the frame joint atwhich the rightside vertical member 270 is attached to the rearcrossmember 271. From a side profile, the rear tubular frame 282 thenhas a most rearward end (i.e., the end of which a motorcycle or ATV isloaded or unloaded) which converges into a tapered end at which thesecond portions of the upper outer perimeter bar 260 and lower perimeterbar 272 converge and are attached thereto in parallel. An inclinedcenter support 278 is further provided at a middle point of the lowerrear crossmember 271 and it is routed such that it interconnects to amiddle point of the second portion of the lower perimeter bar 272.

Integration of Forward Support Section, Foldable Rear Support Section,Axle, Suspension, Wheels and Casters of the First Embodiment

The following paragraphs describe how the forward support section 209,foldable rear support section 210, decking 232, 234, grating panels 280,straight axle 16, independent torsion suspension 18, wheels and tires12, stowable spare tire 36, caster wheel assemblies 30, 31 and othercomponents of the stowable modular trailer 4 are interconnected to andintegrated with each other.

Preferably diamond plate is utilized as the forward decking 232 which isattached to the upper surfaces of the forward support section 209. Also,diamond plate may be utilized as the rear decking 234 which is attachedto the upper surfaces of the foldable rear support section 209.Moreover, any other type of plate material known in the art mayutilized. As best shown in FIGS. 8 and 9, a plurality of mounting tabs114 are provided on various regions of the upper regions of the mainbody of tubular frame 238 and rear tubular frame 282. The plurality ofmounting tabs 114 are utilized to fasten the forward decking 232 to theupper portion of tubular frame 238 and to fasten the rear decking to theupper portion of rear tubular frame 282. Additionally, grating panels280 may be mounted to forward tubular frame 238 and rear tubular frame282. In particular, grating panels 280 may be positioned laterally nextto the sides of forward decking 232. Further, grating 280 may beattached on the upper surface of the rear tubular frame 282. Inparticular, grating panels 280 may be positioned next to rear decking234 such that the region that extends laterally to the first and thirdportions of the U-shaped outer perimeter box are covered by gratingpanels 280.

Forward support section 209 and foldable rear support section 210 arerotatably attached via hinge assemblies 212 (see FIGS. 6-7). As aresult, a hinged joint is formed between forward support section 209 andfoldable rear support section 210. Thus, when trailer 4 is fullydeployed (as shown in FIGS. 6-7 and 10-11), the horizontal plane definedby forward support section 209 is coincident with the horizontal planedefined by rear support section 210, thereby creating a continuousplatform. However, when the trailer 4 is not in use, rear supportsection 210 may be folded about the axis defined by the pair of hingeassemblies 212 (see FIGS. 8 and 9) such that rear support section 210 ispositioned either on top or vertically next to forward support section209.

The stowable modular trailer 4 has an independent torsion suspensionsystem which includes straight axle 16, left and right torsionsuspension components 18, suspension mounting brackets 18, andsuspension receiving brackets 116. The details of the suspension havealready been discussed and therefore are not described in any furtherdetail. A pair of upper and lower suspension receiving brackets 116 arepositioned on the tubular frame 238 to receive suspension mountingbrackets 118 which are rigidly attached to straight axle 16. Each pairof brackets 116 are positioned on the left side and right side of thebody of the frame 238. In particular an upper bracket is attached to thefirst portion of the leftside longitudinal member 211 and a lowerbracket is attached to the leftside lower longitudinal member 246.Similarly, an upper bracket is attached to the first portion of therightside longitudinal member 212 and a lower bracket is attached to therightside lower longitudinal member 248. The straight axle 16, which hasa pair of suspension mounting brackets 118, is then received in thelower suspension receiving brackets 116.

Other components of the stowable modular trailer 4 include wheels andtires 12, fenders 14 and taillights 20 which are also well known in theart and therefore not described in any further detail. FIG. 9, clearlydepicts that the under body of the tubular frame 238 is designed suchthat a spare tire and wheel 36 may be stored forward the straight axle16 and within the recessed area adapted to receive the spare tire/rim36. Another feature of the trailer 4 is the strategic placement of apair of caster assemblies 30 on the underside of frame 238 at the mostrearward end of the frame 238. In particular, a left and right casterassembly 30 is attached to the corners where the most rearward ends ofthe first portions of upper left and right main supports 242, 243intersect the rear upper crossmember 256 to form corner joints. Thecaster assemblies 30 include an offset bracket 280 to allow forsufficient clearance.

Additionally, a third caster wheel 31 may be attached to the lower rearcrossmember 271 of the foldable rear support section 210 (see FIG. 8).Moreover, a securing member 15 (see FIG. 8) is provided on the trailer 4to secure the foldable rear support section 210 to the forward supportsection 209.

Removable Motorcycle Guide Rails of the Second Exemplary Embodiment

The second embodiment of modular trailer 4 may include a pair ofremovable motorcycle guide rails 24 and wheel chocks 26. Each guide rail24 and wheel chock 26 assembly is similar to that discussed in the firstembodiment, and therefore, further discussion on the specific design ofthe same is not necessary. The removability of the motorcycle guiderails 24 and chocks 26 from the second embodiment illustrates an aspectof the modular design of the present invention.

Stowable Loading Ramp of the Second Embodiment

The stowable modular trailer 4 may utilize a stowable loading ramp 22,such as is depicted as is being deployed in FIG. 11 and which is shownin a stowable position in FIG. 8. For the second embodiment, two ramps22 are preferred to be provided to load an ATV, golf cart or the like.Ramp 22 (see FIG. 11) is adapted for loading and offloading bothmotorcycles and ATV vehicles if required. In particular, ramp 22includes a pair of inner parallel rails 124 having a lower transverserail 122 attached to the lower end of the pair. Also, a left 126 andright 128 rail are laterally positioned to the sides of the inner rails124, thus forming a longitudinally rectangular shaped ramp. On the upperside of the ramp 22, an attaching feature 120 is incorporated to secureand attach the upper end of the ramp 22 to the tail end of the modulartrailer 4.

Modular Accessories for the First and Second Exemplary Embodiments

Another aspect of the present invention is that is has been designed toaccommodate modular accessories. For instance, removable utility boxes287 (see FIG. 7) may be installed on both the single transport trailer 2and the dual transport trailer 4. Furthermore, a stoneguard may beinstalled at the forward area of the trailers 2, 4 (see FIG. 7). Also,as already discussed, both trailers 2, 4 may utilize the same guide rail24 and wheel chock 26 assembly.

Operation of First and Second Exemplary Embodiments

The following section will now briefly describe how to operate bothtrailers 2, 4. As depicted in FIG. 5 for the one motorcycle transporttrailer 2, and in FIG. 9 for the two motorcycle transport trailer 4,when both trailers are vertically stowed, casters 30, 31 are engaged tothe floor surface. Initially then, the trailer 2, 4 must be tilted downoff casters 30, 31. By tilting down the trailer 2, 4, the trailer neck78, 278 will be lowered such that the trailer hitch 28 may be attachedto a towing vehicle. When the trailer is being tilted downward, theforward support section 9, 209 will rotate about an axis defined by thewheels 12. The trailer neck 78, 278 may then be securely hitched to thetowing vehicle. Next, the rear support section 10, 210 may be foldedabout hinges 112 until the rear support section 10, 210 is fullydeployed to form a platform such as shown in FIGS. 1-2 and 6-7. Next,the loading ramp(s) 22 may being destowed and attached to the tail endof the trailer 2, 4 such as is shown in FIG. 11. Then the motorcycle maybe loading onto the trailer 2, 4 by rolling the wheels into guide rail24 and over wheel chock 26 until the chock 26 flips over and secure themotorcycle wheel. If desired, tie down straps may then be utilized tosecure the motorcycle to the trailer 2, 4.

Although the invention has been described with reference to severalexemplary embodiments, it is understood that the words that have beenused are words of description and illustration, rather than words oflimitation. Changes may be made within the purview of the appendedclaims, as presently stated and as amended, without departing from thescope and spirit of the invention in its aspects. Although the inventionhas been described with reference to particular means, materials andembodiments, the invention is not intended to be limited to theparticulars disclosed; rather, the invention extends to all functionallyequivalent structures, methods, and uses such are within the scope ofthe appended claims.

1. A trailer comprising: a forward support frame having a first upper platform and a rear interface side projecting downward from the first upper platform; a trailer neck connected to the forward support frame and extending therefrom; a first planar deck plate attached to and covering a substantial portion of the first upper platform; a pair of caster wheels attached proximate the rear interface side; a rear support frame having a second upper platform and a forward interface side projecting downward from the second upper platform; a second planar deck plate attached to and covering a substantial portion of the second upper platform; a third caster wheel attached to the forward interface side; and at least one hinge interconnecting the rear interface and forward interface sides; wherein the trailer is adapted to be configured in a deployed mode in which the rear and forward interfaces are positioned adjacent each other such that the forward and rear support frames form a generally oriented common flatbed platform for supporting a payload; wherein the trailer is further adapted to be configured in a vertically stowed mode in which the first and second planar deck plates are adapted to be positioned adjacent each other in an upright position.
 2. The trailer of claim 1 further including a straight axle assembly mounted to the trailer, the assembly including a pair of wheel and tire assemblies mounted on opposing hub ends thereof.
 3. The trailer of claim 2 wherein the straight axle assembly is mounted transversely across the forward support frame.
 4. The trailer of claim 1, further comprising at least one loading ramp adapted to be stored within the rear support frame.
 5. The trailer of claim 4, wherein one end of said at least one loading ramp may be attached to a rear end of the rear support frame and another end is positioned to engage a supporting surface of the trailer.
 6. The trailer of claim 1 wherein when the trailer is vertically stowed, the pair of caster wheels and the third caster wheel are in contact with a supporting surface of the trailer, and when the trailer is deployed, the pair of caster wheels and the third caster wheel are elevated from the supporting surface of the trailer.
 7. The trailer of claim 1 wherein the forward support frame has a recess underneath the first upper frame which is adapted to receive a spare wheel and tire assembly.
 8. The trailer of claim 1 wherein the trailer is configured to transport at least one motorcycle.
 9. The trailer of claim 8 further comprising at least one motorcycle guide rail assembly removably attached to the first upper frame.
 10. The trailer of claim 9 wherein the motorcycle guide rail assembly further comprises a pivotable wheel chock assembly.
 11. The trailer of claim 1, the forward support frame, first upper frame and first planar deck plate having a forward apex shaped portion adapted to receive one of a removable stone guard or a removable utility box.
 12. The trailer of claim 1 further comprising a plurality of grating panels attached to the first upper frame of the forward support frame and the second upper frame of the rear support frame, the grating panels laterally positioned outboard to the left and right of the first and second planar deck plates.
 13. The trailer of Claim 1 further comprising a pair of bumper bars projecting laterally outward from both sides of the forward support frame.
 14. A vertically stowable modular multi-purpose trailer comprising: a forward support frame including a first upper frame and a rear interface side attached to the first upper frame; a first planar deck plate attached to the first upper frame of the forward support frame, the first planar deck plate covering a substantial portion of the first upper frame; a trailer neck connected to the forward support frame; a straight axle assembly being mounted to the forward support frame; a rear support frame including a second upper frame and a forward interface side being attached to the second upper frame; a second planar deck plate attached to the second upper frame, the second planar deck plate covering a substantial portion of the second upper frame; a plurality of caster wheels, at least one caster wheel being attached proximate the rear interface and at least one caster wheel being attached to the forward interface side; and at least one hinge interconnecting the rear interface of the forward support frame and forward interface of the rear support frame; wherein the trailer is adapted to be configured in a deployed mode in which the rear and forward interfaces are positioned adjacent each other such that the forward and rear support frames form a generally oriented common flatbed platform for supporting a payload; wherein the trailer is further adapted to be configured in a vertically stowed mode in which the first and second planar deck plates are adapted to be positioned adjacent each other in an upright position.
 15. The trailer of claim 14 wherein the straight axle assembly includes a pair of wheel and tire assemblies mounted on opposing hub ends thereof.
 16. The trailer of claim 14 wherein the straight axle assembly is mounted transversely across the forward support frame underneath the first upper frame.
 17. The trailer of claim 14 wherein when the trailer is vertically stowed, the caster wheels are in contact with a supporting ground surface, and wherein when the trailer is deployed, the caster wheels are elevated from the supporting ground surface.
 18. The trailer of claim 14 wherein the forward support frame has a recess underneath the first upper frame which is adapted to receive a spare wheel and tire assembly.
 19. The trailer of claim 14 wherein the trailer is configured to transport at least one motorcycle.
 20. The trailer of claim 19 further comprising at least one motorcycle guide rail assembly removably attached to the first upper frame of the forward support frame.
 21. The trailer of claim 20 wherein the motorcycle guide rail assembly further comprises a pivotable wheel chock assembly. 